Diagnosis
provided by World Register of Marine Species
Hyocrinidae with 5 arms, rarely divided at IBr2ax; proximal arm pattern usually 1+2 3 4 5+6 7+8 with first pinnule on Br4, rarely on Br5. Proximal part of genital pinnules with numerous additional plates never in rows; distally with lateral plates on each side all along the pinnule. Tegmen inflated with subconical anal sac well developed on external side and taller than oral cone. Aboral border of basal ring flanged except in some larger specimens. Stalk with symplexies of 6-8 crenular units.
7. Rose, F. (2008)
Pers. Comm.
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